Title: Composition and Functional Lipid Profiles of Low-Phyate Barleys and Related Cultivars Authors
Submitted to: World Conference on Oilseed and Edible Oil Processing
Publication Type: Abstract Only
Publication Acceptance Date: April 13, 2011
Publication Date: June 21, 2011
Citation: Liu, K., Moreau, R.A., Bregitzer, P.P., Hicks, K.B. 2011. Composition and Functional Lipid Profiles of Low-Phyate Barleys and Related Cultivars. World Conference on Oilseed and Edible Oil Processing. Izmir, Turkey, June 21-23, 2011. Technical Abstract: Barley, one of the earliest cultivated cereal grains in the world, is gaining renewed interest for use in food, feed and as a bioethanol feedstock. Like other grains, its high phytate content is undesirable since phytate affects mineral bioavailability and contributes to P pollution to environment. Recent breeding advances have led to the development of several barley lines (hulled or hulless) with reduced levels of phytate. One of them was recently released by USDA-ARS as a low phytate cultivar (Clearwater). To identify value-added components in barleys and determine if phytate content has any effects on them, we conducted this study to compare levels of tocopherols and tocotrienols, fatty acid composition, and composition of other key nutrients in five low-phytate genotypes with five related cultivars having normal phytate contents. Seed samples were collected from three growing locations, each having two plots. Results showed that genotype, location and their interaction had significant effects (p < 0.05) on most attributes measured. However, correlation between a nutrient level and phytate level was mostly week, indicating that low phyate barleys did not necessarily have different general composition and functional lipid profiles from regular cultivars. When genotypes were grouped into hulled and hulless, for many nutrients, the hulless had higher levels than the hulled type.